Surge of earthquakes in Oklahoma puts fracking under fire

fracking may have been the cause of a magnitude 5.7 quake in November 2011 —the largest earthquake ever recorded in Oklahoma, which damaged 14 homes and injured two people. While oil companies and their supporters deny the connection between fracking and earthquakes, the state is getting tougher on permits in the wake of the shakes. The Oklahoma Corporation Commission recently closed a few suspect disposal wells and is scouring new applications with added caution.